Apple announced that iOS 4.3 will be released on March 11. But the download links are live already. If you connected your iOS device to iTunes today, you might have already seen the update notification. Although the iOS page on Apple’s website still says it’s coming soon. 
Find out more about iOS 4.3 on Apple’s site.

Following are the download links for iOS 4.3.

New iPod Nano was unveiled today at the Apple’s music event. It has multi-touch instead of click wheel.

Also 24 hour battery life, 46% smaller and 42% lighter than the previous model. Also includes volume buttons, VoiceOver, FM radio, Nike+, a pedometer and works in 29 languages.